It's March Madness time again. No, I'm not talking about the big college basketball tournament that started this past weekend. Rather I'm referring to that time of year when TV makers are willing to do what it takes -- for the most part -- to clear store shelves of their 2012 models before the 2013 sets go on sale. In addition, some trends in TV retailing make picking up a leftover set an even better deal than in years past. And if you need another excuse to pull the trigger, there is the thrill of following the bouncing basketballs on a brand new HDTV.read more